Next version products of Promi-SD™ series, starting
from version no. v2i will include an Automatic Detection
Feature of hardware flow control.

Promi-SD™ is designed to operate as DCE (Data Communications
Equipment).
To connect to DTE (Data Terminal Equipment), for example a PC
or a laptop, a straight cable must be used as in below.

DTR/DSR of Promi-SD™ of v2i will be functioned for only Loop-back
operation. Starting from Promi-SD v3, DTR/DSR can be used for
communications

In open space, maximum distances between two Promi-SD units
were tested using different types of Optional Antennas. Users
may extend wireless link distance up to 1.2Km via Promi-SD202
with Patch Antennas for both sides.